Find the measure of angle b 38

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)

One positive number is 9 more than twice another. if their product is 95, find the numbers